Modelling Rivers


Rivers are natural water courses. They have vital contributions to the social and economical welfare of societies living along their course. They provide continuous, usually dependable, flow and supply of water. Accordingly, centralised civilisation began emerging independently along number of river valleys; e.g. the Nile, Tigris and Euphrates, the Indus and the Yellow Rivers. Since then, mankind has been in continuous struggle to understand and live in harmony with this gift/force of nature. Modelling rivers is the modern way to understand their behaviour and is an essential tool to tackle several river problems.

Delft3D is the state-of-the-art modelling framework for hydrodynamics, water quality, ecology, waves and morphology.
Here, in this space, we share knowledge & experiences, and discuss issues related to modelling of rivers.





Sub groups
D-Flow Flexible Mesh
Cohesive sediments & muddy systems


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Roughness definition

Kurt Glock, modified 2 Years ago.

Roughness definition

Youngling Posts: 1 Join Date: 8/6/15 Recent Posts

In D3D it´s possible to choose between different roughness values (Manning, White-Colebrook or Chezy).
Are these values are directly used in the numerical code or are they calculated into the equivalent sand roughness and afterwards used in the hydrodynamic equations in the numerical code.

Thanks in advance,